4 layers99 × 53.3 mm
PSLab
fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io
199 parts1.7kApache-2.0
2 layers42.8 × 28.8 mm
MM Skirt
PrintersForAnts/Micron741If you want to purchase full kits there are 3 available (Kits are slowly updating to R1 hardware just make sure to double check the included hardware in your kit and if you have any questions reach out in the discord)
- Size
- 42.8 × 28.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 12
- Pads
- 40
- Tracks, vias
- 23, 8
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 2 May 2021
- Updated
- 26 Oct 2026
Overview
MM Skirt is an open-source printed circuit board by PrintersForAnts, from the PrintersForAnts/Micron repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 42.8 × 28.8 mm with 11 parts on 12 nets, routed with 23 tracks and 8 vias.
It is built around the WS2812B. Its parts include 8 diodes and 1 resistor.
Main components
1README
README.mdMicron R1
Printed Part Configurator
[blocked]Discord
The official Micron BOM is here.
If you want to purchase full kits there are 3 available (Kits are slowly updating to R1 hardware just make sure to double check the included hardware in your kit and if you have any questions reach out in the discord)
LDO Motors Kit
US Vendors
Non US Vendors
Formbot 3d Kit
Formbot Micron+ (180x180) Kit (Affiliate Link)
Funssor Micron (120x120) Kit (Affiliate Link)
Formbot Micron+ (180x180) Kit (Aliexpress Affiliate Link)
R1 Change Log
120x120 build
Frame Extrusions
| Misumi Part # | Qty | Notes |
|---|---|---|
| HFS3-1515-300 | 4 | Blind holes need to be drilled |
| HFS3-1515-220 | 10 | Ends need to be tapped (M3) |
| HFS3-1515-205 | 2 | |
| HFS3-1515-190 | 1 | |
| HFS3-1515-120 | 1 |
Linear Rails
| Part | Qty | Length | Notes |
|---|---|---|---|
| MGN7H | 6 | 160mm | will work with V0 150mm rails if wanted, but 160mm will work as well and is recommended |
| MGN9C OR MGN9H | 1 | 160mm | will work V0 150mm rails but 160 will work as well and is recommended |
180x180 build
Frame Extrusions
| Misumi Part # | Qty | Notes |
|---|---|---|
| HFS3-1515-350 | 4 | Blind holes need to be drilled |
| HFS3-1515-280 | 10 | Ends need to be tapped (M3) |
| HFS3-1515-265 | 2 | |
| HFS3-1515-250 | 1 | |
| HFS3-1515-180 | 1 |
Linear Rails
| Part | Qty | Length |
|---|---|---|
| MGN7H | 6 | 220mm |
| MGN9C OR MGN9H | 1 | 220mm |
No Drop Nuts
There are 2 versions of this mod, 1 from Zruncho and the other from a user named Zen3D. Both of them have their uses. I prefer to use the Zen3D kind just for the fact that the screw can go all the way through the printed part. Zrunchos do have a much nicer fitment into the extrusions but they also dont allow the screw to go all the way through. NOTE: the Zruncho nuts will not fit anywhere that has a tab to index to the extrusion - this includes the A/B drives, all idlers, and skirts. If you want to print only one type of nut, use the Zen3d nuts.
Thank you
Thanks to the following people on Discord who have helped make this printer what it is today.
- @KyleGB - too many additions to name them all
- @TheWarolf#1247
- @L.e.o.p.a.r.d#0990
- @deepfriedheroin#5006
- @JosAr#0517
- @sentein#3903
- @madcat#7838
- @Kyrios#5486
- @faithblinded#1491
- @zruncho#1790
- @Finn#2449
- @clee#1337
- @slidr#4412
- @gfunnymoney#3748
- Jason from LDO
- Voron Dev Team
- all the R1 beta testers
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | WS2812B | Voron Footprints:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D1, D2, D3, D4, D5, D6, D7, D8 |
| 2 | Conn_01x03_Socket | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | In1, Out1 |
| 1 | R | Resistor_SMD:R_1206_3216Metric | R1 |
Questions
How big is the MM Skirt PCB?
It measures 42.8 × 28.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MM Skirt use?
11 parts, built around the WS2812B. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the MM Skirt KiCad files?
From the PrintersForAnts/Micron repository on GitHub, at the commit this page was made from: the board is Mods/pnewb/Skirt_LED_PCB/KiCad/MM Skirt.kicad_pcb and its schematic Mods/pnewb/Skirt_LED_PCB/KiCad/MM Skirt.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MM Skirt design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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